CN219098558U - Swing arm type lifting gravity center adjusting hanging beam - Google Patents

Abstract

The utility model discloses a swing arm type lifting gravity center lifting beam for adjusting lifting, which comprises the following components: the main beam body is used for balancing and lifting the suspended object, a front suspension structure is arranged at the front end of the bottom of the main beam body, a rear suspension structure is arranged at the rear end of the bottom of the main beam body, and the front suspension structure and the rear suspension structure are connected with the suspended object below through a rigging and a rope; the bottom end pin shaft of the swing arm is connected to the middle part of the main beam body, and the top end of the swing arm is provided with a lifting point structure connected with a lifting hook; the push-pull unit can linearly extend or shrink, the working end pin shaft of the push-pull unit is connected to the side wall of the swing arm, and the bottom end pin shaft of the push-pull unit is connected to the top surface of the main beam body. According to the technical scheme, the push-pull swing arm rotates along the rotating shaft, so that the left and right positions of the lifting point relative to the lifting beam are changed, stable lifting is realized, and meanwhile, the lifting state of a lifted object can be adjusted.

Description

Swing arm type lifting gravity center adjusting hanging beam

Technical Field

The utility model relates to the technical field of adjustable lifting appliances, in particular to a swing arm type lifting beam for adjusting the lifting center of gravity.

Background

In the actual hoisting process, the gravity center of the hoisted object is uncertain, so that the hoisted object is inclined during hoisting, the hoisting risk is increased, and the hoisting work is unchanged. Sometimes, the load is required to adjust the inclination angle of the lifted object in the lifting process so as to facilitate the subsequent installation. Thus, the lifting point needs to be adjusted. The prior art often implements the change of the lifting point in the following two ways.

The first way is: the lifting point is adjusted by changing the integral position of the lifting point on the lifting beam, so that the lifting gravity center position is adjusted. Often set up a plurality of lifting holes at the hanging beam top, select to be lifted by crane with the hole site that is matched with by crane thing and hoist and mount requirement when lifting by crane. This approach has drawbacks: because the lifting holes are arranged at intervals, accurate adjustment and stepless adjustment cannot be ensured, and the lifting cannot be realized when the lifting requirement is high; this adjustment can only be done without load, and the adjustment under load cannot be done.

The second way is: stepless adjustment is achieved by sliding the lifting point position. Often, power mechanisms such as electric power mechanisms and hydraulic power mechanisms are adopted to push a sliding block with a lifting point to move along a preset track, so that the lifting point can slide left and right relative to the lifting beam. This approach has drawbacks: the lifting point is pushed under heavy load, so that the power system needs great power; the whole set of sliding lifting point mechanism has complex structure and higher implementation cost.

Therefore, a swing arm type lifting gravity center adjusting lifting beam needs to be developed to overcome the defects.

Disclosure of Invention

The utility model aims to provide a swing arm type lifting beam for adjusting the lifting gravity center, which changes the left and right positions of a lifting point relative to the lifting beam by pushing and pulling the swing arm to rotate along a rotating shaft so as to stably lift, and can realize the adjustment of the lifting state of a lifted object.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model relates to a swing arm type lifting beam for adjusting lifting gravity center, which comprises the following components:

the main beam body is used for balancing and lifting the suspended object, a front suspension structure is arranged at the front end of the bottom of the main beam body, a rear suspension structure is arranged at the rear end of the bottom of the main beam body, and the front suspension structure and the rear suspension structure are connected with the suspended object below through a rigging and a rope;

the bottom end pin shaft of the swing arm is connected to the middle part of the main beam body, and the top end of the swing arm is provided with a lifting point structure connected with a lifting hook;

the push-pull unit can linearly extend or shrink, the working end pin shaft of the push-pull unit is connected to the side wall of the swing arm, and the bottom end pin shaft of the push-pull unit is connected to the top surface of the main beam body.

Further, the whole appearance of the main girder body is any one of a straight girder, an I-shaped girder and a T-shaped girder.

Further, the front hanging structure specifically adopts a lower protruding lug plate with a front hanging hole, the rear hanging structure specifically adopts a lower protruding lug plate with a rear hanging hole, and the rear hanging hole comprises two groups of first rear hanging holes and second rear hanging holes which are staggered in front-back positions.

Further, a swing arm pin shaft hole is formed in the middle of the main beam body in a penetrating manner along the width direction, and a plurality of swing arm pin shaft holes are formed in the length direction of the main beam body at equal intervals; the swing arm bottom sets up to two support otic placodes of relative setting, the round pin shaft hole has been seted up on the support otic placode, the round pin shaft hole with one of them swing arm round pin shaft hole coaxial arrangement and cross-under round pin hub connection.

Further, a first pin shaft seat is arranged on one side, facing the push-pull unit, of the swing arm, the working end of the push-pull unit is connected to the first pin shaft seat in a pin shaft mode, and the bottom end of the push-pull unit is mounted on the top surface of the main beam body through a second pin shaft seat.

Further, the top of the main beam body is provided with a widened mounting plate at the mounting position of the second pin shaft seat, the second pin shaft seat is connected to the mounting plate through bolts, and a plurality of groups of threaded mounting holes for mounting the second pin shaft seat are arranged on the mounting plate front and back.

Further, the device also comprises a power control box and a winding drum, wherein the power control box is arranged at the top of one end of the main beam body, and drives the push-pull unit; the winding drum and the power control box are positioned at the same end of the main beam body, the winding drum is arranged on the end face of the main beam body, and the winding drum is used for collecting a cable of the power control box connected to a power supply.

Further, the power control box comprises a support, wherein the support comprises two support plates which are vertically and fixedly connected face to face on the top surface of the rear end of the main beam body, the tops of the two support plates are connected with a pin shaft sleeve seat at the top of the power control box through pin shafts, and the bottom of the power control box is arranged in a suspending mode.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the swing arm type lifting beam for adjusting the lifting gravity center, the swing arm and the push-pull unit are arranged on the upper portion of the main beam body, and the push-pull unit pushes or pulls the swing arm, so that the lifting point at the top of the swing arm moves forwards and backwards along the length direction of the main beam body, a lifted object is lifted stably, and meanwhile the lifting posture of the lifted object can be adjusted.

In addition, through setting up the first back hanging hole and the second back hanging hole that the back position staggered, can select suitable hanging hole to hoist according to the size specification of hung object, improved and lifted by crane stationarity. Through setting up a plurality of swing arm pin shaft holes along girder length direction equidistance interval, can be according to the focus position of hung the thing in the mounted position of adjustment swing arm of bigger within range, and then enlarge the fore-and-aft adjustment scope of lifting point structure, the adaptability is stronger. The pin shaft seats are arranged at the two ends of the push-pull unit, so that the adjustment of a larger swing angle is convenient to realize, and the installation is convenient and reliable; by arranging two mounting support seats on each pin shaft seat, two synchronously operated hydraulic cylinders can be used as a push-pull unit, so that the push-pull acting force strength is improved, and the stability is good; the threaded mounting holes for mounting the second pin shaft seats are arranged at different front and rear positions on the mounting plate, the mounting positions of the second pin shaft seats can be adjusted front and rear, further, the swing inclination angle range of the swing arm is changed, the swing angle range is matched with the arrangement mode of the pin shaft holes of the plurality of swing arms, stepless adjustment in a large range can be achieved, and the front and rear adjustment range and the adjustment precision of the lifting point structure are further increased. The power control box and the winding drum are arranged nearby, so that the hydraulic cylinder can be driven nearby, and the equipment cost is reduced; through the setting of reel, be convenient for receive and release in real time and be used for the cable that leads to power supply according to actual hoist and mount distance requirement, avoided the mess and the winding of cable. The power control box is hung on the support through the pin shaft, even when the main beam body is inclined, the power control box can automatically rotate under the dead weight, the power control box is ensured to be always in a vertical state, hydraulic oil in a pump station oil tank of the power control box is prevented from being sprayed out of the tank, and the safe operation of equipment is ensured.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic view of a front view of an embodiment 1 of a swing arm type lifting center of gravity adjusting lifting beam according to the present utility model;

FIG. 2 is a schematic left-view of a swing arm type lifting beam with center of gravity adjusted according to an embodiment 1 of the present utility model;

FIG. 3 is a schematic perspective view of an embodiment 1 of a swing arm type lifting center of gravity adjusting lifting beam according to the present utility model;

FIG. 4 is a schematic top view of a main beam mounting plate according to embodiment 1 of the present utility model;

fig. 5 is a schematic view showing a left inclined hoisting state of embodiment 1 of the present utility model;

fig. 6 is a schematic view of the vertical hoisting state of embodiment 1 of the present utility model;

fig. 7 is a schematic view showing a right inclined hanging state of embodiment 1 of the present utility model;

fig. 8 is a schematic front view of embodiment 2 of the present utility model.

Reference numerals illustrate: 1. a main beam body; 101. a front hanging hole; 102. a first rear hanging hole; 103. a second rear hanging hole; 104. a swing arm pin shaft hole; 105. a cross beam body; 106. a mounting plate; 107. a threaded mounting hole; 2. swing arms; 201. lifting the pin shaft; 202. a first pin shaft seat; 203. a reinforcing plate; 3. a push-pull unit; 4. a second pin shaft seat; 5. a power control box; 6. a reel; 7. a bracket; 701. a top pin shaft; 8. a sling; 9. a suspended object; 901. a mounting surface; 10. u-shaped shackle.

Detailed Description

The core of the utility model is to provide a swing arm type lifting beam for adjusting the lifting gravity center, which changes the left and right positions of a lifting point relative to the lifting beam by pushing and pulling the swing arm to rotate along a rotating shaft so as to stably lift and realize the adjustment of the lifting state of a lifted object.

The following description of the embodiments of the present utility model will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to the drawings, fig. 1 is a schematic front view of an embodiment 1 of a swing arm type lifting center of gravity adjusting lifting beam according to the present utility model; FIG. 2 is a schematic left-view of a swing arm type lifting beam with center of gravity adjusted according to an embodiment 1 of the present utility model;

FIG. 3 is a schematic perspective view of an embodiment 1 of a swing arm type lifting center of gravity adjusting lifting beam according to the present utility model; FIG. 4 is a schematic top view of a main beam mounting plate according to embodiment 1 of the present utility model; fig. 5 is a schematic view showing a left inclined hoisting state of embodiment 1 of the present utility model; fig. 6 is a schematic view of the vertical hoisting state of embodiment 1 of the present utility model; fig. 7 is a schematic view showing a right inclined hanging state of embodiment 1 of the present utility model; fig. 8 is a schematic front view of embodiment 2 of the present utility model.

Example 1

As shown in fig. 1 to 7, a swing arm type lifting center of gravity adjusting lifting beam includes:

the main beam body 1 is used for balancing and lifting the suspended object 9, the front end of the bottom of the main beam body 1 is provided with a front suspension structure, the rear end of the main beam body is provided with a rear suspension structure, and the front suspension structure and the rear suspension structure are connected with the suspended object 9 below through a rigging and a rope. The main beam body 1 is welded into a box beam structure by adopting a steel plate with medium thickness, and has the advantages of high structural strength and high bearing capacity.

The swing arm 2, the bottom round pin hub connection of swing arm 2 is in girder body 1 middle part, and swing arm 2 can round the round pin hub oscillation, the top of swing arm 2 sets up the lifting point structure of connecting lifting device lifting hook. The lifting point structure is specifically a lifting pin shaft 201 installed at the top end of the swing arm 2. The lifting pins 201 are installed through the pin holes of the three vertical lug plates. The lifting pin 201 is connected to the hook by a sling.

The push-pull unit 3, the push-pull unit 3 can be extended or contracted in a straight line, the working end pin shaft of the push-pull unit 3 is connected to the side wall of the swing arm 2, and the bottom end pin shaft of the push-pull unit 3 is connected to the top surface of the main beam body 1. The push-pull unit 3 specifically adopts an electric push rod or a hydraulic cylinder.

Through installing swing arm 2 and push-and-pull unit 3 on the upper portion of girder body 1, push-and-pull unit 3 promotes or pulls swing arm 2 for the hoisting point at swing arm 2 top is along girder body 1 length direction back and forth movement, and then steadily lifts by crane by the hoist object 9, also can adjust the hoist and mount gesture of by the hoist object 9 simultaneously.

Specifically, as shown in fig. 1 to 7, the main beam body 1 has an overall shape of any one of a straight beam, an i-beam and a T-beam. In the specification and the drawing, the whole appearance of the main beam body 1 is a T-shaped beam, namely, the front end of the main beam body 1 is provided with a beam body 105, and the beam body 105 is perpendicular to the main beam body 1 and is suitable for hoisting a hoisted object 9 with a wide front part and a narrow rear part. Obviously, the overall shape of the main beam body 1 is adapted to the specific shape of the suspended object 9, and accordingly similar structural changes are made and fall within the protection scope of the utility model.

In a specific implementation of this embodiment, as shown in fig. 1 to 3 and fig. 5 to 7, the front hanging structure specifically adopts a lower protruding lug plate with a front hanging hole 101. When the main beam body 1 in the form of a T-beam is adopted, the number of the front hanging holes 101 is two and are respectively arranged at the left end and the right end of the beam body 105. The rear hanging structure specifically adopts a lower protruding lug plate with a rear hanging hole, and the rear hanging hole comprises a first rear hanging hole 102 and a second rear hanging hole 103 which are staggered in front-back positions. The hanging holes are connected with ropes for hanging the hung objects 9 through U-shaped shackles.

Through setting up the first back hanging hole 102 and the second back hanging hole 103 that the back and forth position staggers, can select suitable hanging hole to hoist according to the size specification of hung object 9, improve and hoist the stationarity.

In a specific implementation of this embodiment, as shown in fig. 1 to 3 and fig. 5 to 7, a swing arm pin shaft hole 104 is formed in the middle of the main beam body 1 along the width direction. The three swing arm pin shaft holes 104 are equidistantly arranged along the length direction of the main beam body 1 at intervals, and the intervals can be specifically adjusted according to actual hoisting conditions. The swing arm 2 bottom sets up to two support otic placodes that set up relatively, two support otic placodes strides at girder 1 middle part. The support lug plate is provided with a pin shaft hole, and the pin shaft hole is coaxially arranged with one of the swing arm pin shaft holes 104 and connected with the pin shaft in a penetrating way.

Through setting up a plurality of swing arm pin shaft holes 104 along girder 1 length direction equidistance interval, can be according to the focus position of hung object 9 in the mounted position of the adjustment swing arm 2 of bigger within range, and then enlarge the fore-and-aft adjustment scope of hoisting point structure, the adaptability is stronger.

In a specific implementation of this embodiment, as shown in fig. 1 to 7, a first pin shaft seat 202 is welded on a side of the swing arm 2 facing the push-pull unit 3, and a working end pin shaft of the push-pull unit 3 is connected to the first pin shaft seat 202. The bottom end of the push-pull unit 3 is arranged on the top surface of the main beam body 1 through a second pin shaft seat 4.

Specifically, as shown in fig. 3 and fig. 4, the push-pull unit 3 specifically adopts two hydraulic cylinders that run synchronously, and two mounting support positions are respectively arranged on the first pin shaft seat 202 and the second pin shaft seat 4, so that the mounting conditions of the two hydraulic cylinders can be ensured to be consistent.

Specifically, as shown in fig. 3 and fig. 4, the top of the main beam body 1 is provided with a widened mounting plate 106 at the mounting position of the second pin shaft seat 4, the second pin shaft seat 4 is connected to the mounting plate 106 through bolts, and a plurality of groups of threaded mounting holes 107 for mounting the second pin shaft seat 4 are arranged on the mounting plate 106 front and back.

The pin shaft seats are arranged at the two ends of the push-pull unit 3, so that the adjustment of a larger swing angle is convenient to realize, and the installation is convenient and reliable; by arranging two mounting support seats on each pin shaft seat, two synchronously operated hydraulic cylinders can be used as a push-pull unit 3, so that the push-pull acting force strength is improved, and the stability is good; the threaded mounting holes 107 for mounting the second pin shaft seat 4 are arranged on the mounting plate 106 in different front and rear positions, the mounting position of the second pin shaft seat 4 can be adjusted front and rear, further the swing inclination angle range of the swing arm 2 is changed, the swing inclination angle range is matched with the arrangement mode of the plurality of swing arm pin shaft holes 104, stepless adjustment in a large range can be achieved, and the front and rear adjustment range and the adjustment precision of the lifting point structure are further enlarged.

In a specific implementation manner of this embodiment, as shown in fig. 1 to 7, the swing arm type lifting center of gravity adjusting lifting beam of the present utility model further includes a power control box 5 and a winding drum 6, the power control box 5 is installed at the top of the rear end of the main beam body 1, and a base plate of the power control box 5 is directly installed on the top surface of the main beam body 1 through bolts. The power control box 5 comprises a pump station and an electric control system, and a valve group of the pump station is connected to a hydraulic cylinder of the push-pull unit 3 through a hose. The reel 6 is arranged on the rear end face of the main beam body 1, and the reel 6 is used for collecting a cable of the power control box 5 connected to an on-ground power supply. The cable also includes a control cable that communicates to an above-ground console. Obviously, the power control box 5 and the winding drum 6 can be arranged at the front end of the main beam body 1 in cooperation with the position of the push-pull unit 3.

By arranging the power control box 5 and the winding drum 6 nearby, the hydraulic cylinder can be driven nearby, and the equipment cost is reduced; through the setting of reel 6, be convenient for receive and release in real time and be used for the cable that leads to power supply according to actual hoist and mount distance requirement, avoided the mess and the winding of cable.

The swing arm type lifting center of gravity adjusting lifting beam of the embodiment is used in the following process: as shown in fig. 5 to 7, taking the suspended object 9 as a hub of a wind driven generator as an example, a hanging belt is used for holding a lifting pin shaft 201, and two ends of the hanging belt are sleeved on the hanging hook of the lifting device after being folded in half. The hoisting equipment is controlled to hoist the main beam body 1 to the position right above the hoisted object 9, a steel wire rope, a hanging belt or a chain is used for connecting the front hanging hole 101 to a root hanging point of the hub of the wind driven generator, and the steel wire rope, the hanging belt or the chain is used for connecting the rear hanging hole to a head hanging point of the hub of the wind driven generator. Note that the first rear hanging hole 102 or the second rear hanging hole 103 is selected as a rear hanging hole according to the specification size of the wind turbine hub. After connection, the cable plug at the reel 6 also needs to be connected to a ground power supply and a ground console. The whole wind driven generator hub is lifted by the control lifting device, the control console is controlled, the hydraulic cylinder of the push-pull unit 3 acts, the front and back positions of lifting points on the lifting beam are adjusted, and the balance and stability of the wind driven generator hub in the lifting process are ensured. When the wind power generator hub is mounted on a wind power main machine, the mounting surface 901 of the root part of the wind power generator hub is required to conform to the inclination angle of the mounting process. At this time, the control console is controlled as required, so that the piston rod of the hydraulic cylinder of the push-pull unit 3 is retracted, the lifting point on the lifting beam moves backwards, the top of the mounting surface 901 is further inclined backwards towards the bottom, and when the inclination angle requirement is met, the hydraulic cylinder stops acting to mount the hub of the wind driven generator. Of course, when the piston rod of the hydraulic cylinder is ejected, the mounting surface 901 is inclined in the opposite direction, and the adjustment can be repeated until the inclination angle meets the mounting requirement.

Example 2

As shown in fig. 8, this embodiment is formed by improving the installation manner of the power control box 5 on the basis of the above-described embodiment 1. The swing arm type lifting beam for adjusting the lifting gravity center also comprises a bracket 7, wherein the bracket 7 comprises two bracket plates which are vertically and fixedly connected with the top surface of the rear end of the main beam body 1 in a face-to-face manner, the tops of the two bracket plates are connected with a pin shaft sleeve seat at the top of the power control box 5 through a pin shaft, the power control box 5 is positioned between the two bracket plates, and the bottom of the power control box 5 is arranged in a suspended manner.

The power control box 5 is hung on the support 7 through a pin shaft, even when the main beam body 1 is inclined, the power control box 5 can automatically rotate under the dead weight, the power control box 5 is ensured to be always in a vertical state, hydraulic oil in a pump station oil tank of the power control box 5 is prevented from being sprayed out of the tank, and the safe operation of equipment is ensured.

Example 3

The utility model also discloses a working method for adjusting the lifting gravity center lifting beam by the swing arm, which utilizes the swing arm type lifting gravity center lifting beam to lift the lifted object 9 in any embodiment, wherein the lifting point is arranged at the top end of the swing arm 2, the swing arm 2 is connected to the middle part of the main beam body 1 in a penetrating way around a pin shaft at the bottom end, and the front and back positions of the lifting point at the top end of the swing arm 2 are adjusted in a swinging way around the pin shaft at the bottom end of the swing arm 2.

The front and back positions of the lifting points are adjusted in a swinging mode of the driving swing arms, the driving force required is small relative to the existing sliding lifting point mode, meanwhile, a guide rail sliding block mechanism is omitted, and the device is simple in structure and convenient to realize.

Specifically, by providing a plurality of pin mounting holes, the bottom pin mounting position of the swing arm 2 can be adjusted back and forth, and the mounting position of the push-pull unit 3 can also be adjusted back and forth adaptively.

The continuous stepless adjustment in a larger adjustment range can be realized by changing the installation position of the bottom pin shaft of the swing arm 2 and the installation position of the push-pull unit 3, and the device is suitable for the lifting operation of the lifted objects with various specifications.

According to the swing arm type lifting beam for adjusting the lifting gravity center, the swing arm 2 and the push-pull unit 3 are arranged on the upper portion of the main beam body 1, and the push-pull unit 3 pushes or pulls the swing arm 2, so that the lifting point at the top of the swing arm 2 moves back and forth along the length direction of the main beam body 1, the lifted object 9 is lifted stably, and meanwhile the lifting posture of the lifted object 9 can be adjusted. In addition, through setting up the first back hanging hole 102 and the second back hanging hole 103 that the back and forth position staggers, can select suitable hanging hole to hoist according to the size specification of hung object 9, improve and hoist the stationarity. Through setting up a plurality of swing arm pin shaft holes 104 along girder 1 length direction equidistance interval, can be according to the focus position of hung object 9 in the mounted position of the adjustment swing arm 2 of bigger within range, and then enlarge the fore-and-aft adjustment scope of hoisting point structure, the adaptability is stronger. The pin shaft seats are arranged at the two ends of the push-pull unit 3, so that the adjustment of a larger swing angle is convenient to realize, and the installation is convenient and reliable; by arranging two mounting support seats on each pin shaft seat, two synchronously operated hydraulic cylinders can be used as a push-pull unit 3, so that the push-pull acting force strength is improved, and the stability is good; the threaded mounting holes 107 for mounting the second pin shaft seat 4 are arranged on the mounting plate 106 in different front and rear positions, the mounting position of the second pin shaft seat 4 can be adjusted front and rear, further the swing inclination angle range of the swing arm 2 is changed, the swing inclination angle range is matched with the arrangement mode of the plurality of swing arm pin shaft holes 104, stepless adjustment in a large range can be achieved, and the front and rear adjustment range and the adjustment precision of the lifting point structure are further enlarged. By arranging the power control box 5 and the winding drum 6 nearby, the hydraulic cylinder can be driven nearby, and the equipment cost is reduced; through the setting of reel 6, be convenient for receive and release in real time and be used for the cable that leads to power supply according to actual hoist and mount distance requirement, avoided the mess and the winding of cable. The power control box 5 is hung on the support 7 through a pin shaft, even when the main beam body 1 is inclined, the power control box 5 can automatically rotate under the dead weight, the power control box 5 is ensured to be always in a vertical state, hydraulic oil in a pump station oil tank of the power control box 5 is prevented from being sprayed out of the tank, and the safe operation of equipment is ensured.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims (8)

1. A swing arm type lifting center of gravity adjustment lifting beam, comprising:

the main beam body (1) is used for balancing and lifting the suspended object (9), a front suspension structure is arranged at the front end of the bottom of the main beam body (1), a rear suspension structure is arranged at the rear end of the bottom of the main beam body, and the front suspension structure and the rear suspension structure are connected with the suspended object (9) below through a rigging and a rope;

the swing arm (2), the bottom pin roll of the swing arm (2) is connected to the middle part of the main beam body (1), and the top end of the swing arm (2) is provided with a lifting point structure connected with a lifting hook;

the sliding unit (3), sliding unit (3) can linear extension or shrink, the work end round pin hub connection of sliding unit (3) is in on the lateral wall of swing arm (2), the bottom round pin hub connection of sliding unit (3) is in on the top surface of girder body (1).

2. The swing arm style adjustable lifting center of gravity hanging beam of claim 1, wherein: the whole appearance of the main girder body (1) is any one of a straight girder, an I-shaped girder and a T-shaped girder.

3. The swing arm style adjustable lifting center of gravity hanging beam of claim 1, wherein: the front hanging structure specifically adopts a lower protruding lug plate with a front hanging hole (101), the rear hanging structure specifically adopts a lower protruding lug plate with a rear hanging hole, and the rear hanging hole comprises a first rear hanging hole (102) and a second rear hanging hole (103) which are staggered in front-back positions.

4. The swing arm style adjustable lifting center of gravity hanging beam of claim 1, wherein: swing arm pin shaft holes (104) are formed in the middle of the main beam body (1) in a penetrating manner along the width direction, and a plurality of swing arm pin shaft holes (104) are arranged at equal intervals along the length direction of the main beam body (1); the bottom end of the swing arm (2) is provided with two supporting ear plates which are oppositely arranged, the supporting ear plates are provided with pin shaft holes, and the pin shaft holes are coaxially arranged with one of the swing arm pin shaft holes (104) and connected with the pin shaft in a penetrating way.

5. The swing arm style adjustment lifting center of gravity hanging beam of claim 4, wherein: one side of the swing arm (2) facing the push-pull unit (3) is provided with a first pin shaft seat (202), the working end of the push-pull unit (3) is connected to the first pin shaft seat (202) in a pin shaft way, and the bottom end of the push-pull unit (3) is installed on the top surface of the main beam body (1) through a second pin shaft seat (4).

6. The swing arm style adjustable lifting center of gravity hanging beam of claim 5, wherein: the top of the main beam body (1) is provided with a widened mounting plate (106) at the mounting position of the second pin shaft seat (4), the second pin shaft seat (4) is connected to the mounting plate (106) through bolts, and a plurality of groups of threaded mounting holes (107) for mounting the second pin shaft seat (4) are arranged on the mounting plate (106) front and back.

7. The swing arm style adjustable lifting center of gravity hanging beam of claim 1, wherein: the device also comprises a power control box (5) and a winding drum (6), wherein the power control box (5) is arranged at the top of one end of the main beam body (1), and the power control box (5) drives the push-pull unit (3); the winding drum (6) and the power control box (5) are positioned at the same end of the main beam body (1), the winding drum (6) is arranged on the end face of the main beam body (1), and the winding drum (6) is used for collecting a cable of the power control box (5) connected to a power supply.

8. The swing arm style adjustment lifting center of gravity hanging beam of claim 7, wherein: still include support (7), support (7) are in including two face-to-face perpendicular fixed connection the mounting panel on the upper surface of girder body (1) rear end, two the mounting panel top is through the round pin hub connection the round pin axle cover seat at power control box (5) top, the unsettled setting in bottom of power control box (5).

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